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Printed map of the Keweenaw Copper Country in the Upper Peninsula of Michigan in 1907. This map shows the lands owned by the various mining companies in the area. The scale on the original is 1 inch equals 1.8 miles.
Colors on the map show company holdings in the Keweenaw Peninsula. Scale on original is 1 inch equals 2 miles.
Reproduction, blue line copy. Shows the rock strata on the river banks in Ontonagon County, Michigan in 1860. Scale on original is 1 inch equals 1 mile.
Printed map of Houghton County, Michigan in 1898. Map is color coded to show land ownership and mineral rights ownership. No scale given.
Printed map showing the location of mines and mineral deposits in part of Ontonagon County, Michigan in 1909. The scale on the original is 2 inches equals 1 mile.
Geological map from 1909 showing the copper range in Elm River Township of Houghton County, Michigan for the year 1909.
Printed map of the Copper Range in Houghton County showing the mineral resources of the area. This map was first completed in 1901 and then revised in 1907 and 1909. The scale on the original is 2 inches equals 1 mile.
Printed map depicting the location of copper deposits in Houghton County in 1898. The map was re-printed in 1909. Scale on original is 2 inches equals 1 mile.
Hand drawn onto a reproduction base map of Keweenaw County, Michigan. This 1898 pocket map of the copper range of Michigan shows the land holdings of various mining companies in 1898. Scale on original is .5 inches equals 1 mile.
